IDENTIFYING AND REPLACING WEB SERVICE USING SERVICE COMPOSITION AND GENETIC TECHNIQUE

Web service is a middleware service between business transactions. If the service causes some errors like deadlock, network failure in current system the business transaction totally fails. The problem is easily identified and tolerate through fast bully algorithm. The algorithm identifies the failed service and replace the new service with help of election process conducted by Fast Bully, which minimizes the response time. The master service will allocate a composite of slave service with availability ,best band width and best fit. When a master service sends IAMUP message to slave service, it will replace its position with master service. The Fast Bully algorithm used for the purpose of services are identified and replaced with the business transaction by using Genetic Techniques. Avoids the violation of QoS constraints after replanning by defining and evaluating a replace-ability property. A proactive approach that searches for an optimal plan with a lower risk of violating the constraints in the event that re-composition is needed.